src/usermanager.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include "xline.h"
  16 #include "bancache.h"
  17
  18 /* add a client connection to the sockets list */
  19 void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
  20 {
  21         /* NOTE: Calling this one parameter constructor for User automatically
  22          * allocates a new UUID and places it in the hash_map.
  23          */
  24         LocalUser* New = NULL;
  25         try
  26         {
  27                 New = new LocalUser();
  28         }
  29         catch (...)
  30         {
  31                 ServerInstance->Logs->Log("USERS", DEFAULT,"*** WTF *** Duplicated UUID! -- Crack smoking monkies have been unleashed.");
  32                 ServerInstance->SNO->WriteToSnoMask('a', "WARNING *** Duplicate UUID allocated!");
  33                 return;
  34         }
  35
  36         New->SetFd(socket);
  37         memcpy(&New->client_sa, client, sizeof(irc::sockets::sockaddrs));
  38         memcpy(&New->server_sa, server, sizeof(irc::sockets::sockaddrs));
  39
  40         /* Give each of the modules an attempt to hook the user for I/O */
  41         FOREACH_MOD(I_OnHookIO, OnHookIO(New, via));
  42
  43         if (New->GetIOHook())
  44         {
  45                 try
  46                 {
  47                         New->GetIOHook()->OnStreamSocketAccept(New, client, server);
  48                 }
  49                 catch (CoreException& modexcept)
  50                 {
  51                         ServerInstance->Logs->Log("SOCKET", DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
  52                 }
  53         }
  54
  55         ServerInstance->Logs->Log("USERS", DEBUG,"New user fd: %d", socket);
  56
  57         this->unregistered_count++;
  58
  59         (*(this->clientlist))[New->uuid] = New;
  60
  61         /* The users default nick is their UUID */
  62         New->nick.assign(New->uuid, 0, ServerInstance->Config->Limits.NickMax);
  63
  64         New->ident.assign("unknown");
  65
  66         New->registered = REG_NONE;
  67         New->signon = ServerInstance->Time() + ServerInstance->Config->dns_timeout;
  68         New->lastping = 1;
  69
  70         /* Smarter than your average bear^H^H^H^Hset of strlcpys. */
  71         New->dhost.assign(New->GetIPString(), 0, 64);
  72         New->host.assign(New->GetIPString(), 0, 64);
  73
  74         ServerInstance->Users->AddLocalClone(New);
  75         ServerInstance->Users->AddGlobalClone(New);
  76
  77         /*
  78          * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved.
  79          * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t
  80          */
  81         New->SetClass();
  82
  83         /*
  84          * Check connect class settings and initialise settings into User.
  85          * This will be done again after DNS resolution. -- w00t
  86          */
  87         New->CheckClass();
  88
  89         this->local_users.push_back(New);
  90
  91         if ((this->local_users.size() > ServerInstance->Config->SoftLimit) || (this->local_users.size() >= (unsigned int)ServerInstance->SE->GetMaxFds()))
  92         {
  93                 ServerInstance->SNO->WriteToSnoMask('a', "Warning: softlimit value has been reached: %d clients", ServerInstance->Config->SoftLimit);
  94                 this->QuitUser(New,"No more connections allowed");
  95                 return;
  96         }
  97
  98         /*
  99          * even with bancache, we still have to keep User::exempt current.
 100          * besides that, if we get a positive bancache hit, we still won't fuck
 101          * them over if they are exempt. -- w00t
 102          */
 103         New->exempt = (ServerInstance->XLines->MatchesLine("E",New) != NULL);
 104
 105         if (BanCacheHit *b = ServerInstance->BanCache->GetHit(New->GetIPString()))
 106         {
 107                 if (!b->Type.empty() && !New->exempt)
 108                 {
 109                         /* user banned */
 110                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Positive hit for ") + New->GetIPString());
 111                         if (!ServerInstance->Config->MoronBanner.empty())
 112                                 New->WriteServ("NOTICE %s :*** %s", New->nick.c_str(), ServerInstance->Config->MoronBanner.c_str());
 113                         this->QuitUser(New, b->Reason);
 114                         return;
 115                 }
 116                 else
 117                 {
 118                         ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Negative hit for ") + New->GetIPString());
 119                 }
 120         }
 121         else
 122         {
 123                 if (!New->exempt)
 124                 {
 125                         XLine* r = ServerInstance->XLines->MatchesLine("Z",New);
 126
 127                         if (r)
 128                         {
 129                                 r->Apply(New);
 130                                 return;
 131                         }
 132                 }
 133         }
 134
 135         if (!ServerInstance->SE->AddFd(New, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE))
 136         {
 137                 ServerInstance->Logs->Log("USERS", DEBUG,"Internal error on new connection");
 138                 this->QuitUser(New, "Internal error handling connection");
 139         }
 140
 141         /* NOTE: even if dns lookups are *off*, we still need to display this.
 142          * BOPM and other stuff requires it.
 143          */
 144         New->WriteServ("NOTICE Auth :*** Looking up your hostname...");
 145
 146         if (ServerInstance->Config->NoUserDns)
 147         {
 148                 New->WriteServ("NOTICE %s :*** Skipping host resolution (disabled by server administrator)", New->nick.c_str());
 149                 New->dns_done = true;
 150         }
 151         else
 152         {
 153                 New->StartDNSLookup();
 154         }
 155 }
 156
 157 void UserManager::QuitUser(User *user, const std::string &quitreason, const char* operreason)
 158 {
 159         if (user->quitting)
 160         {
 161                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a user (%s) twice. Did your module call QuitUser twice?", user->nick.c_str());
 162                 return;
 163         }
 164
 165         if (IS_SERVER(user))
 166         {
 167                 ServerInstance->Logs->Log("CULLLIST",DEBUG, "*** Warning *** - You tried to quit a fake user (%s)", user->nick.c_str());
 168                 return;
 169         }
 170
 171         user->quitting = true;
 172
 173         ServerInstance->Logs->Log("USERS", DEBUG, "QuitUser: %s=%s '%s'", user->uuid.c_str(), user->nick.c_str(), quitreason.c_str());
 174         user->Write("ERROR :Closing link: (%s@%s) [%s]", user->ident.c_str(), user->host.c_str(), *operreason ? operreason : quitreason.c_str());
 175
 176         std::string reason;
 177         std::string oper_reason;
 178         reason.assign(quitreason, 0, ServerInstance->Config->Limits.MaxQuit);
 179         if (operreason && *operreason)
 180                 oper_reason.assign(operreason, 0, ServerInstance->Config->Limits.MaxQuit);
 181         else
 182                 oper_reason = quitreason;
 183
 184         ServerInstance->GlobalCulls.AddItem(user);
 185
 186         if (user->registered == REG_ALL)
 187         {
 188                 FOREACH_MOD(I_OnUserQuit,OnUserQuit(user, reason, oper_reason));
 189                 user->WriteCommonQuit(reason, oper_reason);
 190         }
 191
 192         if (user->registered != REG_ALL)
 193                 if (ServerInstance->Users->unregistered_count)
 194                         ServerInstance->Users->unregistered_count--;
 195
 196         if (IS_LOCAL(user))
 197         {
 198                 FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(IS_LOCAL(user)));
 199                 user->DoWrite();
 200                 if (user->GetIOHook())
 201                 {
 202                         try
 203                         {
 204                                 user->GetIOHook()->OnStreamSocketClose(user);
 205                         }
 206                         catch (CoreException& modexcept)
 207                         {
 208                                 ServerInstance->Logs->Log("USERS",DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 209                         }
 210                 }
 211
 212                 ServerInstance->SE->DelFd(user);
 213                 user->Close();
 214                 // user->Close() will set fd to -1; this breaks IS_LOCAL. Fix
 215                 user->SetFd(INT_MAX);
 216         }
 217
 218         /*
 219          * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything
 220          * if they were an oper with +sn +qQ.
 221          */
 222         if (user->registered == REG_ALL)
 223         {
 224                 if (IS_LOCAL(user))
 225                 {
 226                         if (!user->quietquit)
 227                         {
 228                                 ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s!%s@%s [%s]",
 229                                         user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str());
 230                         }
 231                 }
 232                 else
 233                 {
 234                         if ((!ServerInstance->SilentULine(user->server)) && (!user->quietquit))
 235                         {
 236                                 ServerInstance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s!%s@%s [%s]",
 237                                         user->server.c_str(), user->nick.c_str(), user->ident.c_str(), user->host.c_str(), oper_reason.c_str());
 238                         }
 239                 }
 240                 user->AddToWhoWas();
 241         }
 242
 243         user_hash::iterator iter = this->clientlist->find(user->nick);
 244
 245         if (iter != this->clientlist->end())
 246                 this->clientlist->erase(iter);
 247         else
 248                 ServerInstance->Logs->Log("USERS", DEBUG, "iter == clientlist->end, can't remove them from hash... problematic..");
 249 }
 250
 251
 252 void UserManager::AddLocalClone(User *user)
 253 {
 254         clonemap::iterator x;
 255         x = local_clones.find(user->GetCIDRMask());
 256         if (x != local_clones.end())
 257                 x->second++;
 258         else
 259                 local_clones[user->GetCIDRMask()] = 1;
 260 }
 261
 262 void UserManager::AddGlobalClone(User *user)
 263 {
 264         clonemap::iterator x;
 265
 266         x = global_clones.find(user->GetCIDRMask());
 267         if (x != global_clones.end())
 268                 x->second++;
 269         else
 270                 global_clones[user->GetCIDRMask()] = 1;
 271 }
 272
 273 void UserManager::RemoveCloneCounts(User *user)
 274 {
 275         clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 276         if (x != local_clones.end())
 277         {
 278                 x->second--;
 279                 if (!x->second)
 280                 {
 281                         local_clones.erase(x);
 282                 }
 283         }
 284
 285         clonemap::iterator y = global_clones.find(user->GetCIDRMask());
 286         if (y != global_clones.end())
 287         {
 288                 y->second--;
 289                 if (!y->second)
 290                 {
 291                         global_clones.erase(y);
 292                 }
 293         }
 294 }
 295
 296 unsigned long UserManager::GlobalCloneCount(User *user)
 297 {
 298         clonemap::iterator x = global_clones.find(user->GetCIDRMask());
 299         if (x != global_clones.end())
 300                 return x->second;
 301         else
 302                 return 0;
 303 }
 304
 305 unsigned long UserManager::LocalCloneCount(User *user)
 306 {
 307         clonemap::iterator x = local_clones.find(user->GetCIDRMask());
 308         if (x != local_clones.end())
 309                 return x->second;
 310         else
 311                 return 0;
 312 }
 313
 314 /* this function counts all users connected, wether they are registered or NOT. */
 315 unsigned int UserManager::UserCount()
 316 {
 317         /*
 318          * XXX: Todo:
 319          *  As part of this restructuring, move clientlist/etc fields into usermanager.
 320          *      -- w00t
 321          */
 322         return this->clientlist->size();
 323 }
 324
 325 /* this counts only registered users, so that the percentages in /MAP don't mess up */
 326 unsigned int UserManager::RegisteredUserCount()
 327 {
 328         return this->clientlist->size() - this->UnregisteredUserCount();
 329 }
 330
 331 /* return how many users are opered */
 332 unsigned int UserManager::OperCount()
 333 {
 334         return this->all_opers.size();
 335 }
 336
 337 /* return how many users are unregistered */
 338 unsigned int UserManager::UnregisteredUserCount()
 339 {
 340         return this->unregistered_count;
 341 }
 342
 343 /* return how many local registered users there are */
 344 unsigned int UserManager::LocalUserCount()
 345 {
 346         /* Doesnt count unregistered clients */
 347         return (this->local_users.size() - this->UnregisteredUserCount());
 348 }
 349
 350 void UserManager::ServerNoticeAll(const char* text, ...)
 351 {
 352         if (!text)
 353                 return;
 354
 355         char textbuffer[MAXBUF];
 356         char formatbuffer[MAXBUF];
 357         va_list argsPtr;
 358         va_start (argsPtr, text);
 359         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 360         va_end(argsPtr);
 361
 362         snprintf(formatbuffer,MAXBUF,"NOTICE $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 363
 364         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 365         {
 366                 User* t = *i;
 367                 t->WriteServ(std::string(formatbuffer));
 368         }
 369 }
 370
 371 void UserManager::ServerPrivmsgAll(const char* text, ...)
 372 {
 373         if (!text)
 374                 return;
 375
 376         char textbuffer[MAXBUF];
 377         char formatbuffer[MAXBUF];
 378         va_list argsPtr;
 379         va_start (argsPtr, text);
 380         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 381         va_end(argsPtr);
 382
 383         snprintf(formatbuffer,MAXBUF,"PRIVMSG $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer);
 384
 385         for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 386         {
 387                 User* t = *i;
 388                 t->WriteServ(std::string(formatbuffer));
 389         }
 390 }
 391
 392 void UserManager::WriteMode(const char* modes, int flags, const char* text, ...)
 393 {
 394         char textbuffer[MAXBUF];
 395         int modelen;
 396         va_list argsPtr;
 397
 398         if (!text || !modes || !flags)
 399         {
 400                 ServerInstance->Logs->Log("USERS", DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
 401                 return;
 402         }
 403
 404         va_start(argsPtr, text);
 405         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 406         va_end(argsPtr);
 407         modelen = strlen(modes);
 408
 409         if (flags == WM_AND)
 410         {
 411                 for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 412                 {
 413                         User* t = *i;
 414                         bool send_to_user = true;
 415
 416                         for (int n = 0; n < modelen; n++)
 417                         {
 418                                 if (!t->IsModeSet(modes[n]))
 419                                 {
 420                                         send_to_user = false;
 421                                         break;
 422                                 }
 423                         }
 424                         if (send_to_user)
 425                         {
 426                                 t->WriteServ("NOTICE %s :%s", t->nick.c_str(), textbuffer);
 427                         }
 428                 }
 429         }
 430         else if (flags == WM_OR)
 431         {
 432                 for (std::vector<LocalUser*>::const_iterator i = local_users.begin(); i != local_users.end(); i++)
 433                 {
 434                         User* t = *i;
 435                         bool send_to_user = false;
 436
 437                         for (int n = 0; n < modelen; n++)
 438                         {
 439                                 if (t->IsModeSet(modes[n]))
 440                                 {
 441                                         send_to_user = true;
 442                                         break;
 443                                 }
 444                         }
 445
 446                         if (send_to_user)
 447                         {
 448                                 t->WriteServ("NOTICE %s :%s", t->nick.c_str(), textbuffer);
 449                         }
 450                 }
 451         }
 452 }
 453
 454 /* return how many users have a given mode e.g. 'a' */
 455 int UserManager::ModeCount(const char mode)
 456 {
 457         ModeHandler* mh = ServerInstance->Modes->FindMode(mode, MODETYPE_USER);
 458
 459         if (mh)
 460                 return mh->GetCount();
 461         else
 462                 return 0;
 463 }